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【324290】2024八年级数学下册 专题突破 第01讲 二次根式的运算专题复习(含解析)(新版)浙

时间:2025-01-15 21:53:40 作者: 字数:5974字
简介:


 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 01讲二次根式的运算专题复习

类型一二次根式的计算

1.计算:

1 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

  1.  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

9

  1.  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1

3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1

4 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> | <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2|

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +4 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

5 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

36

6)(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣5 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +5 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> );

解:原式=(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 25 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

12﹣50

=﹣38

7 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式=3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

8)(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式=(4 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3×3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

9 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

9)( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )﹣( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3﹣3+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +2

3﹣3﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2

=﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣2

10 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式=1﹣16+2

=﹣13

11 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3

12 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式=3﹣1﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ÷ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ÷ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3﹣1﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

3﹣1﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +2

4﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

13 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

14 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +4× <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣3﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ﹣3

15)(3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 22﹣3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )(2+3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> );

解:原式=9+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +5﹣4﹣45

9+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +5﹣(﹣41

9+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +5+41

55+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

16)( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ÷2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ).

解:原式=(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +4 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ÷2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ÷2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

17 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

4﹣2

2

18 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

解:原式=2+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1﹣3﹣1

2+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1﹣2

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +1

类型二与二次根式有关的化简求值

【直接型化简求值】

1.(雨花区校级期末)已知x3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> y3﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,求下列各式的值:

1x2+y2

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

【解答】解:(1)原式=(x+y2﹣2xy

x3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> y3﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

x+y=(3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +3﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )=3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +3﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 6

xy=(3+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )(3﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )=9﹣72

原式=62﹣2×2

36﹣4

32

2)原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

xy2x2+y232时,

原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 16

2.(惠安县期末)先化简,再求值:(x+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )(x <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +xx﹣1),其中x2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

【解答】解:原式=x2﹣2+x2x

2x2﹣2﹣x

x2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 时,

原式=2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2﹣2﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2×12﹣2﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

24﹣2﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

22﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

【利用其非负性化简求值】

3.(西湖区校级期末)已知:y <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +5,化简并求 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的值.

【解答】解:∵x﹣4≥04﹣x≥0

x4

y5

原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

=﹣4

4.(永春县期中)若y <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 1,化简求值[2x+y2yx+y)﹣4xy]÷2x

【解答】解:原式=(4x2+4xy+y2xyy2﹣4xy÷2x

=(4x2xy÷2x

2x <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> y

y <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

x﹣2≥02﹣x≥0

x2y=﹣1

x2y=﹣1时,原式=2×2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

【新定义型化简求值】

5.(薛城区期末)对于任意的正数mn,定义新运算“※”为:mn <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,请依据新运算计算:(3※2×8※12).

【解答】解:∵32812

3※2×8※12

=( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

=( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2

6.(临渭区校级月考)对实数ab,定义“★”运算规则如下:ab <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,求 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ★( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )的值

【解答】解:∵ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

则原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2

【利用整体思想化简求值】

7.(锦江区校级期末)已知 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

求:(1aba+b的值;

2)求a2+b2+2的值.

【解答】解:(1a <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

ab=( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )=6﹣51

ab=( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )﹣( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> )= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

原式=abab

1﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

aba+b的值为1﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2)原式=(ab2+2ab+2

=(2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2+2×1+2

20+2+2

24

a2+b2+2的值为24

8.(尤溪县期中)已知x2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> y2+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,求代数式x2+2xy+y2的值.

【解答】解:∵x2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> y2+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

x2+2xy+y2

=(x+y2

=(2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +2+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2

42

16

9.(鼓楼区校级期末)在数学课外学习活动中,小明和他的同学遇到一道题:

已知a <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,求2a2﹣8a+1的值.他是这样解答的:

a <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

a﹣2=﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

a﹣223a2﹣4a+43

a2﹣4a=﹣1

2a2﹣8a+12a2﹣4a+1(﹣1+1=﹣1

请你根据小明的解题过程,解决如下问题:

1 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>   <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  

2)化简 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +……+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

3)若a <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,求a4﹣4a3﹣4a+3的值.

【解答】解:(1 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

故答案为 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

2)原式= <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 1+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +…+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 1

13﹣1

12

3)∵a <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +2

a﹣2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

a﹣225,即a2﹣4a+45

a2﹣4a1

a4﹣4a3﹣4a+3a2a2﹣4a)﹣4a+3

a2×1﹣4a+3

a2﹣4a+3

1+3

4

【综合应用】

10.(大邑县期中)阅读材料:小明在学习二次根式后,发现一些含根号的式子可以写成另一个式子的平方.如3+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,善于思考的小明进行了以下探索,若设a+b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> (其中,abmn均为整数),则有am2+2n2b2mn,这样小明就找到一种把类似a+b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的式子化为平方式的方法.请你依照小明的方法探索并解决下列问题:

1)若a+b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,当abmn均为整数时,用含mn的式子分别表示ab,得:a m2+7n2 b 2mn 

2)若a+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,当amn均为正整数时,求a的值.

3)化简: <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

【解答】解:(1)∵a+b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

a+b <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> m2+2mn <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +7n2abmn均为整数),

am2+7n2b2mn

故答案为:m2+7n22mn

2)∵a+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

a+6 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> m2+2nm <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +3n2abmn均为整数),

am2+3n22mn6

mn3

m1n3a28

m3n1a12

综上所述:a2812

3)∵ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 4﹣2×2× <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +37﹣4 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 3+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +35+2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 2﹣ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> <a href="/tags/38/" title="突破" class="c1" target="_blank">突破</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/282/" title="专题" class="c1" target="_blank">专题</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>








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